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Control method for frequency converter

a control method and frequency converter technology, applied in the direction of electric programme control, program control, instruments, etc., can solve the problem of no natural, intuitive way for users to interact directly with the motor driv

Active Publication Date: 2011-07-28
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method and system for controlling a motor drive with a frequency converter. The system converts changes in electrical quantities of the motor caused by user actions into observations, selects control symbols based on matching sequences of observations with a set of valid patterns, and controls the frequency converter based on the selected symbols. The technical effect of this patent is to provide a more efficient and effective way to control the motor drive, allowing for better user control and performance.

Problems solved by technology

However, there is no natural, intuitive way for a user to interact directly with the motor drive.

Method used

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  • Control method for frequency converter
  • Control method for frequency converter
  • Control method for frequency converter

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Embodiment Construction

[0013]Exemplary embodiments of the present disclosure provide a motor drive and a method for controlling a frequency converter of a motor drive in which the motor of the drive is connected to a load and the motor is controlled by the frequency converter. The exemplary motor drive and method of the present disclosure advantageously permit a user to interact directly with the motor drive in a natural, intuitive way.

[0014]An exemplary arrangement within the scope of the present disclosure includes a motor drive and a load. The motor drive can also include a converter. Exemplary embodiments of the present disclosure are based on the realization that user actions affecting the load cause changes in electrical quantities of the motor. Certain quantities are measured by the converter and each action thus generates a measurable pattern. The converter, using a pattern recognition algorithm, matches the pattern caused by the user action with a set of valid patterns.

[0015]These valid patterns ...

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Abstract

A motor drive and a method in connection with a motor drive including a frequency converter are provided. The motor of the drive is connected to a load, and the motor is controlled with the frequency controller. The method includes the steps of converting changes in electrical quantities of the motor caused by actions affecting the load into observations representing the changes, selecting control symbols on the basis of matching of the sequences of observations with a set of valid patterns, and controlling the converter based on the selected symbols.

Description

RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. §119 to European Patent Application No. 10151532.8 filed in Europe on Jan. 25, 2010, the entire content of which is hereby incorporated by reference in its entirety.FIELD[0002]The present disclosure relates to a method in connection with a motor drive comprising a frequency converter, wherein the motor of the drive is connected to a load.BACKGROUND INFORMATION[0003]There are many devices powered with electricity and operated by people. An example of this human-machine interaction is a motor drive attached to a load and operated by a user. Nowadays, the motor drive usually includes a frequency converter.[0004]The frequency converter can receive control parameters through an external interface, which can be a front panel on the converter or an electrical / optical communications interface, for example. However, there is no natural, intuitive way for a user to interact directly with the motor drive.SUMMARY[0005]An ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G05B19/409
CPCB66B25/003H02P23/0077F04B49/02
Inventor KANGAS, JANIRANTANEN, JUSSI
Owner ABB (SCHWEIZ) AG